A white check long sleeve shirt and a grey check suit are absolute mainstays if you're crafting a smart casual wardrobe that matches up to the highest menswear standards. Go ahead and complete your look with brown leather derby shoes for a dose of polish. Come warm sunny days you're looking for a look to keep you comfortable and sharp –– this look is just what you need. Wondering how to dress age-appropriately as you step into your 40s? This getup is a good illustration.